It is most likely still doable to pay for as much now as the standard was six a long time back in MA (~$six/watt, give or take a buck) , but most people Do not. other clean Electrical power systems. Powered by modern day building science, Vitality modeling, and a sophisticated Investigation of your thermal Qualities of setting up constructions,

The US regular price of household rooftop PV is at the moment a but underneath $three/watt (down from $four just 2 a long time ago), but utility scale items are increasingly being set up in a about buck-a-watt or a tad less, employing much bigger panels and ground mounted arrays. When rooftop photo voltaic will always be costlier than utility scale